The climate in Altan during September can be summarized as cool and dry.
September is in the fall / autumn in Altan and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 14°C (57°F), whilst at night 0°C (32°F) is normal.
Daytime temperature | 13.8°C 56.8°F |
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Nightly temperature | 0°C 32°F |
Average temperature | 6.9°C 44.4°F |
Daily sunshine | 9.5 hrs |
Avg rainfall | 25 mm 1 ins |
Rainy days | 8 days |
Sea temperature | 14.3°C 57.8°F |
Humidity | 55% |
Windspeed | 6.8kph 4 mph |
On average September is the 4th wettest month of the year in Altan with around 25mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.5 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Altan in September 2025.
Best places to visit in September
Hottest month: | July | 20.3°C 68.5°F |
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Driest month: | February | 3mm 0.1ins |
Sunniest month: | September | 9.5hrs |
Coldest month: | January | -18.7°C -1.7°F |
Wettest month: | July | 65mm 2.6ins |